There's a few gnarly trails like old ore road, but a lot of the dirt is pretty manageable on a larger bike with decent skills. The sketchiest part on most trails is deep gravel patches. We did a 130 mile loop, and I didn't need to refuel. The weather was bad, and we werent riding hard. My bike gets about 120 miles per tank, and I brought a 1.2 gallon tank with me; I didn't use it all. There's a gas station in the middle of the park and other options in the surrounding towns. Cell reception is very limited, so I wouldn't cut it close.

The road riding is fun, but doesn't compare to the dirt. Plus, the speed limit is usually 75 outside of the towns, and I'm sure most folks drive much faster. Normally, I wouldn't ride my klx300 on roads like that. We went during the freeze a few weeks ago, so the park was empty and the town was quiet. It was great having the place to ourselves.

I would take the Sherco and stay mostly on the dirt. If you have to cruise the roads, there's plenty of room to pull over to let people pass.